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Property, Plant, and Equipment
 12 Months Ended
Mar. 31, 2024
Property, Plant and Equipment, Net [Abstract]  
Property, Plant, and Equipment Property, Plant, and Equipment
 
Consolidated property, plant, and equipment of the Company consisted of the following:
 March 31,
 20242023
Land and land improvements$5,460 $5,467 
Buildings66,683 60,899 
Machinery, equipment, and leasehold improvements253,643 249,379 
Construction in progress23,426 10,344 
 349,212 326,089 
Less accumulated depreciation242,817 231,729 
Net property, plant, and equipment$106,395 $94,360 

The acquisition of montratec contributed $7,478,000 to the increase in property, plant, and equipment since March 31, 2023.

Depreciation expense was $16,549,000, $15,946,000, and $16,639,000 for the years ended March 31, 2024, 2023, and 2022, respectively.

Gross property, plant, and equipment includes capitalized software costs of 40,881,000 and $43,826,000 at March 31, 2024 and 2023, respectively. Accumulated depreciation includes accumulated amortization on capitalized software costs of 28,443,000 and $29,809,000 at March 31, 2024 and 2023, respectively. Amortization expense on capitalized software costs was $1,510,000, $2,132,000, and $2,399,000 during the years ended March 31, 2024, 2023, and 2022, respectively.